List of largest rifts and valleys in the Solar System

Following are the longest, widest, and deepest rift

Rift

In geology, a rift or chasm is a place where the Earth's crust and lithosphere are being pulled apart and is an example of extensional tectonics....

s and valleys in various worlds of the Solar System

Solar System

The Solar System consists of the Sun and the astronomical objects gravitationally bound in orbit around it, all of which formed from the collapse of a giant molecular cloud approximately 4.6 billion years ago. The vast majority of the system's mass is in the Sun...

World	Rift/Valley	Length	Max. width	Max. depth	Notes
Venus Venus Venus is the second planet from the Sun, orbiting it every 224.7 Earth days. The planet is named after Venus, the Roman goddess of love and beauty. After the Moon, it is the brightest natural object in the night sky, reaching an apparent magnitude of −4.6, bright enough to cast shadows...	Baltis Vallis Baltis Vallis Baltis Vallis is a sinuous channel on Venus ranging from one to three kilometers wide and more than 7,000 kilometers long, slightly longer than the Nile and the longest known channel of any kind in the solar system. It is thought that it once held a river of lava known as a lava channel.The channel...	abbr=on 6,800	abbr=on 3		A lava channel
Earth Earth Earth is the third planet from the Sun, and the densest and fifth-largest of the eight planets in the Solar System. It is also the largest of the Solar System's four terrestrial planets...	Atlantic Ocean Atlantic Ocean The Atlantic Ocean is the second-largest of the world's oceanic divisions. With a total area of about , it covers approximately 20% of the Earth's surface and about 26% of its water surface area...	≈abbr=on 10,000	≈abbr=on 6,000	abbr=on 7.758	Length taken to be that of the Mid-Atlantic Ridge Mid-Atlantic Ridge The Mid-Atlantic Ridge is a mid-ocean ridge, a divergent tectonic plate boundary located along the floor of the Atlantic Ocean, and part of the longest mountain range in the world. It separates the Eurasian Plate and North American Plate in the North Atlantic, and the African Plate from the South... . (The ridge also has a 2ary rift valley running its length.) The width is an average taken along the spreading ridges (Georgia–Senegal, Brazil – Bight of Benin, etc). The greatest depth is the Romanche Trench Romanche Trench The Romanche Trench, also called the Romanche Furrow or Romanche Gap, is the third deepest of the major trenches of the Atlantic Ocean, after the Puerto Rico Trench and the South Sandwich Trench. It bisects the Mid-Atlantic Ridge just north of the equator at the narrowest part of the Atlantic... . (The Puerto Rico Trench Puerto Rico Trench The Puerto Rico Trench is an oceanic trench located on the boundary between the Caribbean Sea and the Atlantic Ocean. The trench is associated with a complex transition between the subduction zone to the south along the Lesser Antilles island arc and the major transform fault zone or plate boundary... is not part of the rift system.)
	Great Rift Valley Great Rift Valley The Great Rift Valley is a name given in the late 19th century by British explorer John Walter Gregory to the continuous geographic trench, approximately in length, that runs from northern Syria in Southwest Asia to central Mozambique in South East Africa...	abbr=on 6,000	abbr=on 220	abbr=on 2	Width and depth are those of the Red Sea Rift Red Sea Rift The Red Sea Rift is a spreading center between two tectonic plates, the African Plate and the Arabian Plate. It extends down the length of the Red Sea, stretching from the southern end of the Dead Sea Transform to a triple junction with the Aden Ridge and the East African Rift in the Afar... , discounting continental shelves < 200 m deep. (These may not be the extremes of the whole rift system.) Length of the Red Sea section abbr=on 2250.
	West Antarctic Rift West Antarctic Rift The West Antarctic Rift is a major, active rift valley lying between East and West Antarctica. It encompasses the Ross Sea, the area under the Ross Ice Shelf and a part of West Antarctica...
	Keweenawan Rift	abbr=on 2,000	abbr=on 70	abbr=on 0.27	Width & depth Isle Royale Isle Royale Isle Royale is an island of the Great Lakes, located in the northwest of Lake Superior, and part of the state of Michigan. The island and the 450 surrounding smaller islands and waters make up Isle Royale National Park.... – Keweenaw Peninsula Keweenaw Peninsula The Keweenaw Peninsula is the northern-most part of Michigan's Upper Peninsula. It projects into Lake Superior and was the site of the first copper boom in the United States. As of the 2000 census, its population was roughly 43,200... ; may not be widest point.
	Colca Canyon Colca Canyon Colca Canyon is a canyon of the Colca River in southern Peru. Peru's third most-visited tourist destination with about 160,000 visitors annually, it's located about 100 miles northwest of Arequipa...			abbr=on 4.160
	Cotahuasi Canyon Cotahuasi Canyon Cotahuasi Canyon near the city of Arequipa in Peru is the deepest canyon in the world. Its maximum depth is 3535 metres in the vicinity of Ninancocha, 335 metres more than the Colca Canyon. The Cotahuasi Canyon is an impressive chasm that the river has eroded between two enormous mountain massifs:...			abbr=on 3.535
Moon	Vallis Snellius Vallis Snellius Vallis Snellius is a linear valley on the near side of the Moon. It is located in the rugged southeastern part of the visible surface, to the south of the Mare Fecunditatis. This feature is radial to the Mare Nectaris basin to the west-northwest, much like Vallis Rheita to the southwest, and the...	abbr=on 592	≈ abbr=on 30?		Width assumed to be approx. that of Vallis Rheita Vallis Rheita Vallis Rheita is a linear valley on the near side of the Moon. It is located in the southeastern quadrant, and is oriented radially to Mare Nectaris. This valley appears to share a common origin with the Vallis Snellius to the northeast, as both are oriented radially with Mare Nectaris.The center...
Mars	Valles Marineris Valles Marineris Valles Marineris is a system of canyons that runs along the Martian surface east of the Tharsis region...	abbr=on 3769	abbr=on 200	abbr=on 4
	Kasei Valles Kasei Valles Kasei Valles is a giant system of canyons in Mare Acidalium and Lunae Palus quadrangles on Mars, located at 24.6° north latitude and 65.0° west longitude. It is 1,780 km long and was named for the word for "Mars" in Japanese. This huge system is 300 miles wide in some places. In contrast,...	abbr=on 1780	abbr=on 200	2–3 km
	Tiu Valles Tiu Valles Tiu Valles is an outflow channel in the Oxia Palus quadrangle of Mars, located at 15.9° North and 35.7° West.It is 1,720 km long and was named after the word for "Mars" in old English ....	abbr=on 1720
	Ares Vallis Ares Vallis Ares Vallis is an outflow channel on Mars, named after the Greek name for Mars: Ares, the god of war; it appears to have been carved by fluids, perhaps water...	abbr=on 1700
Vesta 4 Vesta Vesta, formally designated 4 Vesta, is one of the largest asteroids, with a mean diameter of about . It was discovered by Heinrich Wilhelm Olbers on March 29, 1807, and is named after the Roman virgin goddess of home and hearth, Vesta....	equatorial channels	Approx. abbr=on 1700			Length is approx. the 1790-km circumference of Vesta
Europa	?	?	More than abbr=on 20		Moon of Jupiter
Tethys Tethys (moon) Tethys or Saturn III is a mid-sized moon of Saturn about across. It was discovered by G. D. Cassini in 1684 and is named after titan Tethys of Greek mythology. Tethys is pronounced \|Odysseus]] is about 400 km in diameter, while the largest graben—Ithaca Chasma is about 100 km wide and...	Ithaca Chasma Ithaca Chasma Ithaca Chasma is a valley on Saturn's moon Tethys, named after the island of Ithaca, in Greece. It is on average 100 km wide, 3 to 5 km deep and 2,000 km long, running approximately three-quarters of the way around Tethys' circumference, making it one of the longer valleys in the...	abbr=on 2000	abbr=on 100	3–5 km (2–3 mi)	Moon of Saturn. Ithaca span approx. 75% the circumference of the moon.

See also